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WebSVN – planix.SVN – Blame – /os/branches/planix-v0/sys/src/cmd/echo.c – Rev 2

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#include <u.h>
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#include <libc.h>
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void
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main(int argc, char *argv[])
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{
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	int nflag;
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	int i, len;
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	char *buf, *p;
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	nflag = 0;
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	if(argc > 1 && strcmp(argv[1], "-n") == 0)
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		nflag = 1;
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	len = 1;
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	for(i = 1+nflag; i < argc; i++)
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		len += strlen(argv[i])+1;
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	buf = malloc(len);
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	if(buf == 0)
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		exits("no memory");
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	p = buf;
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	for(i = 1+nflag; i < argc; i++){
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		strcpy(p, argv[i]);
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		p += strlen(p);
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		if(i < argc-1)
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			*p++ = ' ';
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	}
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	if(!nflag)
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		*p++ = '\n';
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	if(write(1, buf, p-buf) < 0){
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		fprint(2, "echo: write error: %r\n");
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		exits("write error");
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	}
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	exits((char *)0);
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}